Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e935a80c125ccbc3c206e011c6cb47a4ee1d82ec076e68308a6d8878a20c608' 
  AND token = 'qBeWH5xe1P8FFgJa2b//DawuM9XdyUiH7bz1bjS7vvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}